TWI502945B - Method to determine an indicator value and apparatus to determine an indicator - Google Patents

Description

Method for determining index value and device for determining index value

The present invention is primarily directed to a method and apparatus for determining a Control Format Indicator (CFI) value in a wireless communication network architecture.

Wireless communication systems are widely used to provide diverse communication content such as voice, data, and the like. These systems can be multiple access systems that support multiple user communications by sharing available system resources such as bandwidth and transmission energy. These multiple access systems can be implemented in a variety of technologies, including code division multiple access (CDMA), time division multiple access (TDMA), and frequency division multiple access (Frequency Division Multiple). Access, FDMA), 3GPP Long Term Evolution (LTE) radio access, 3GPP Long Term Evolution Advanced (LTE-A) radio access, Orthogonal Frequency Multiple Access (Orthogonal Frequency) Division Multiple Access, OFDMA).

In these systems, an additional load is required for each sub-frame to indicate a Control Format Indicator (CFI). Furthermore, reconfiguration often occurs when the sub-frame of the Multi-media Broadcast over a Single Frequency Network (MBSFN) is changed. In addition, the CFI information of each evolved base station eNB must be maintained through additional interaction or coordination between the evolved base stations eNBs.

Therefore, there is a great need for a method and apparatus for efficiently determining and processing CFI.

The present invention provides a method for determining an index value, which is applicable to a wireless communication system architecture, including: configuring a complex system device with carrier aggregation of a complex component carrier, such as a user equipment or an evolved node; receiving a first component carrier a physical downlink shared channel (PDSCH); transmitting a corresponding one of the physical downlink control channels (PDCCH) on a second component carrier; configuring a control format indicator having an initial value using a radio resource control (RRC) signal ( CFI); and setting the CFI so that the CFI is used to determine a starting point of the PDSCH.

The present invention provides a method for determining an index value, which is applicable to a wireless communication system architecture, including: configuring a complex system device with carrier aggregation of a complex component carrier, such as a user equipment or an evolved node; receiving a first component carrier a PDSCH; transmitting a corresponding one of the PDCCHs on a second component carrier; and configuring a CFI having an initial value using an RRC signal.

The present invention provides a device for determining an index value, which is applicable to a wireless communication system architecture, and includes: a first module configured to configure carrier aggregation of a plurality of component carriers, such as a user equipment or an evolution node; a second module for receiving a PDSCH on a first component carrier; a third module for transmitting a corresponding one of the PDCCHs on a second component carrier; and a fourth module for using one The RRC signal configuration has a CFI of an initial value; and a fifth module for setting the CFI such that the CFI is used to determine a starting point of the PDSCH.

The wireless communication system and device in the embodiment of the present invention is a wireless communication system that supports broadcast services, and the wireless communication system is widely used to provide various communication services, such as voice, data, etc., which can be established in points. Code Multiple Access (CDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), 3GPP Long Term Evolution (LTE) Radio Access, 3GPP Long Term Evolution Advanced Technology (LTE-A) , 3GPP 2 Ultra Mobile Broadband, Worldwide Interoperability for Microwave Access (WiMax) and other modulation technologies.

In particular, the wireless communication system equipment in the embodiments can be designed to support one or more specifications, such as those specified by the third generation communication system standards organization, including the document 3GPP TS 36.211 V.8.6.0 (Evolution Universal Mobile) Communication System Land Surface Radio Access (hereinafter referred to as E-UTRA) Physical Channel and Modulation), 3GPP TR 36.912 V.9.0.0 (E-UTRA Enhancement Feasibility Study (LTE-A) (ninth edition)), And 3GPP TSG-RAN WG1 Meeting #61 (orthogonal carrier CFI signal - R1-103052), the above specifications and documents are explicitly included in this case.

1 is a schematic diagram of a multiple access wireless communication system in accordance with an embodiment of the present invention. An access network 100 includes multiple antenna groups, with one antenna group including antennas 104 and 106, another antenna group including antennas 108 and 110, and another antenna group including antennas 112 and 114. In Figure 1, each antenna group includes only two antennas, however each antenna group may include more or fewer antennas. Access endpoint 116 is in communication with antennas 112 and 114, wherein antennas 112 and 114 transmit information to access endpoint 116 over forward link 120 and receive information from access endpoint 116 via reverse link 118. Access endpoint 122 is in communication with antennas 106 and 108, wherein antennas 106 and 108 transmit information to access endpoint 122 via forward link 126 and receive information from access endpoint 122 via reverse link 124. In a frequency division duplex system, communication links 118, 120, 124, and 126 can communicate using different frequencies. For example, forward link 120 can use a different frequency than reverse link 118.

Each antenna group and/or area for communication is considered to be part of the access network. In this embodiment, the antenna group is used to communicate with the access endpoints in a portion of the access network 100.

In communication with the forward links 120 and 126, the transmit antennas of the access network 110 use beamforming to improve the signal to noise ratio of the forward links of the different access endpoints 116 and 122. Furthermore, the access network uses beamforming to transmit to randomly dispersed access endpoints, which reduces interference to access endpoints in adjacent cells as compared to all access endpoints transmitted through a single antenna. .

The access network (AN) can be a fixed station or a base station for communicating with an endpoint, or with an access point, a Node B, a base station, an evolution base station, or an evolved Node B. An Access Endpoint (AT) can be a User Equipment (UE), a wireless communication device, an endpoint, or an access endpoint, and the like.

2 is an embodiment of a multiple input multiple output (MIMO) system 200, a transmission system 210 (which may also be an access network) and a receiving system 250 (which may also be an access endpoint or user equipment). . In the delivery system 210, traffic data for the date stream is provided by the data source 212 to the delivery data processor 214.

In this embodiment, each data stream is transmitted via a respective transmit antenna, and the transport data processor 214 is configured to format and encode each data string according to a particular coding mode selected for the data string. And diverting flow data to provide coded data.

The encoded data of each data stream is multiplexed by using orthogonal frequency division multiplexing technology and pilot data, and the guiding data is processed by a known method, and can also be used. The receiving system evaluates the channel response. Then, according to a specific modulation mode (BPSK, QPSK, M-PSK or M-QAM) selected for the data stream, the multiplexed boot data and the encrypted data of each data stream are modulated, and used. To provide a modulation symbol. The transmission rate, coding, and modulation of each data stream is determined by instructions executed by processor 230.

Then, all the data stream modulation symbols are transmitted to the transmission MIMO processor 220, which can further process the modulation symbols (such as orthogonal frequency division multiplexing), and transmit multiple input multiple output processing. 220 then provides N _T modulation symbol stream number to the number N _T transmitters (TMTR) 222a through 222t. In some embodiments, the transmit MIMO processor 220 uses a beamforming weighting method on the antenna of the data stream and the antenna through which the symbol to be transmitted passes.

Each transmitter 222 receives and processes a respective symbol stream to provide one or more analog signals, and further processes (eg, amplifies, filters, and upconverts) analog signals to provide suitable transmission over multiple input multiple output channels. the modulation signal, the transmitter 222a through 222t number N _T of each modulation signal via N _T transmit antennas 224a through 224t.

Receiving system 250, the modulated signal is transmitted via the N _R receiving antennas 252a through 252r, and the received signal via each antenna 252 is provided to a respective receiver unit (RCVR) 254a through 254r. Each receiver 254 processes (eg, amplifies, filters, and downconverts) the respective received signals, digitizes the processed signals to provide samples, and further processes the samples to provide corresponding "received" symbols. flow.

The receive data processor 260 receives a particular processing technique, receives and processes the symbols N _R N _R receivers 254 a received stream, thereby providing N _T th "Detected" symbol stream. Then, the receiving data processor 260 performs demodulation, confluence, and decoding each detected symbol stream to restore the flow data of the data string. The processing of the receiving data processor 260 is the reverse of the processing performed by the transmitting multiplexed output processor 220 and the transport data processor 214 of the transport system 210.

The processor 270 periodically determines which precoding matrix to use (discussed below), and the processor 270 sets a reverse link message, the reverse link message including a matrix index portion and a Rank value part.

The reverse link message includes a plurality of messages related to the communication link and/or the received data stream, and the reverse link message is then processed by the transfer data processor 238 and modulated by the modulator 280 via the transmitter 254a. Processing to 254r and back to the delivery system 210, wherein the delivery data processor 238 also receives traffic data from a plurality of data streams of the data source 236.

In the transmission system 210, the modulated signal from the receiving system 250 is received by the antenna 224, processed by the receiver 222, demodulated by the demodulator 240, and then received by the receiving data processor 242. Link message. Next, the processor 230 determines which precoding matrix to use to determine the weight of the beamforming and processes the resulting message.

The memory 232 can be used to temporarily store data from 240 or 242 buffered/calculated via the processor 230, store buffered data from 212, or store some specific code. The memory 272 can be used to temporarily store data from 260 buffered/calculated via the processor 270, store buffered data from 236, or store some specific code.

3 is a schematic diagram of an alternative simplified block diagram of a communication device in accordance with an embodiment of the present invention. The communication device 300 in the wireless communication system can be used to implement the user equipment (or access endpoints) 116 and 122 in FIG. 1, and the wireless communication system is preferably a wireless communication system using long term evolution technology. The communication device 300 includes an input device 302, an output device 304, a control circuit 306, a central processing unit 308, a memory 310, a program code 312, and a transceiver 314. The control circuit 306 executes the code 312 stored in the memory 310 through the central processing unit 308, thereby controlling the operation of the communication device 300. The communication device 300 can receive signals input by the user through the input device 302 (such as a keyboard or a small keyboard), and can also output images and sound through the output device 304 (such as a screen or an amplifier). The transceiver 314 is configured to receive and transmit wireless signals, transmit the received signals to the control circuit 306, and output signals generated by the control circuit 306 in a state of wireless transmission.

4 is a schematic diagram of a simplified block diagram of the code 312 in FIG. 3, in accordance with an embodiment of the present invention. In this embodiment, the code 312 includes an application layer 400, a third layer 402, and a second layer 404, and the code 312 is coupled to the first layer 406. The third layer 402 performs radio resource control, the second layer 404 performs link control, and the first layer 406 performs physical connection.

For Long Term Evolution or Long Term Evolution Advanced Technology Systems, Layer 2 404 may include a Radio Link Control (RLC) layer and a Medium Access Control (MAC) layer. Layer 3 402 can include a Radio Resource Control (RRC) layer.

Figure 5 is another simplified block diagram of a wireless communication system. The wireless communication system 500 includes a wireless transmit/receive unit (WTRU) 530, an evolved node (eNB) 510, and a mobility management entity/server gateway (MME/S-GW) 520. The WTRU 530, the evolved node 510, and the MME/S-GW 520 are configured to perform sounding reference signal (SRS) transmission using multiple input multiple output and carrier aggregation techniques.

In addition to the elements found in a typical WTRU, the WTRU 530 includes a processor or CPU 532 having an optional memory 534, one or more transceivers 536 ₁ through 536 _N , and an antenna 538. The CPU 532 is configured to perform sounding reference signal (SRS) transmission using multiple input multiple output and carrier aggregation techniques. Transceivers 536 ₁ through 536 _{N are} used to communicate with CPU 532, which is used to facilitate wireless transmission and reception.

In addition to the elements found in a typical evolutionary node, the evolved node 510 includes a processor or CPU 512 having an optional memory 514, one or more transceivers 516 ₁ through 516 _M , and an antenna 518. The CPU 215 is used to support SRS transmission using multiple input multiple output and carrier aggregation techniques. The transceivers 516 ₁ to 516 _M are for communicating with the CPU 512 for facilitating wireless transmission and reception. The CPU is used to (1) determine which WTRU will transmit the sounding reference signal (SRS); (2) determine the configuration of the SRS transmission on the WTRU's frequency and clock, and also determine the type of SRS transmission and convey information to the WTRU; Receiving SRS measurement information; (4) processing SRS information and informing the scheduler to enable the scheduler to determine the schedule. The evolved node 520 is coupled to the MME/S-GW, and the MME/S-GW includes a processor 522 having an optional memory 524.

In the following discussion, the invention will primarily be described in the context of the 3GPP architecture. However, it will be appreciated that anyone skilled in the art can readily implement the present invention using the 3GPP2 network architecture and other network architectures.

In the long-term evolution technology, there is a single transmission of a single antenna and a single carrier, which is a physical upload control channel (PUCCH for short), a physical upload shared channel (PUSCH for short), or a sounding reference signal (SRS). The WTRU does not transmit the SRS whenever the SRS is transmitted in the same sub-box as PUCCH format 2/2a/2b. Whenever the SRS is transmitted in the same sub-frame as the ACK/NACK and/or the positive SRS, the WTRU does not transmit the SRS unless the parameter simultaneous-AN-and-SRS is true. Whether the WTRU supports the transmission of ACK/NACK on PUCCH and SRS in the sub-frame is determined by the parameter provided by the higher layer, simultaneous-AN-and-SRS. If the WTRU supports transmission of ACK/NACK on PUCCH and SRS in the secondary frame, the ACK/NACK and SR are transmitted in the cell-specific SRS sub-frame WTRU using the shortened PUCCH format, where the ACK/NACK or SR symbol relative to the SRS symbol Was punctured. Furthermore, in order for the evolved node eNodeB to perform reliable channel estimation for frequency scheduling for each uplink, the transmit energy of the SRS (and other channels) is controllable.

Furthermore, in the long term evolution technique, Single Carrier Frequency Division Multiple Access (SC-FDMA) transmission is selected as the uplink. This particular implementation is to extend orthogonal frequency division multiple access (DFT-S-OFDMA) according to discrete Fourier transform. For the purposes of this application, it can be used interchangeably. The WTRU in the uplink transmits only a limited set of subcarriers specified in the FDMA. If the overall OFDM signal or system bandwidth is comprised of beneficial subcarriers 1 through 100 in the uplink, the first WTRU is used to transmit its own signal on subcarriers 1-12, on subcarriers 13-24. The second WTRU is used to transmit its own signal, analogously. At the same time, the evolved node receives a combined uplink signal from one or more WTRUs spanning the entire transmit bandwidth, but each WTRU only passes in a subset of the available transmit bandwidth. 3GPP Radio Layer 1 selects an OFDM form with additional restrictions - DFT-S OFDM is a form of transmission in the uplink of Long Term Evolution technology, which is limited to the fact that the time-frequency resources of the WTRU must be composed of a set of consecutive frequency sub-carriers. . There is no direct current (DC) subcarrier (different from the downlink) in the uplink of Long Term Evolution technology. The WTRU may apply frequency hopping for uplink transmission in an operational mode.

The WTRUs transmit uplink data on the Physical Uplink Shared Channel (PUSCH) (some cases are control information). The uplink grant is used to schedule and control PUSCH transmission by the evolved node, which is formatted in format 0 on the physical downlink control channel. As part of the uplink scheduling, the WTRU receives information such as modulation code set (MCS), transmit energy control (TPC) instructions, uplink resource allocation (e.g., an index of allocated resource blocks), and the like. The WTRU then transmits the PUSCH over the allocated uplink resources using the corresponding MCS and transmit power, the transmit power being controlled by the TPC command.

Similar to the downlink of Long Term Evolution technology, the channel estimate reference signal also needs to be used in the uplink of the Long Term Evolution technology to enable simultaneous demodulation of the PUSCH (or PUCCH) at the evolved node. These reference signals are uplink demodulation reference signals (DRS) that are always transmitted with PUSCH (or PUCCH) and use the same frequency band.

In order for the evolved node to estimate the uplink channel quality of the uplink schedule, the SRS is transmitted in the uplink. In the frequency domain, SRS transmission covers bands that are advantageous for frequency domain scheduling. When the SRS is to be transmitted in the sub-frame, the SRS will occupy the last SC-FDMA symbol of the sub-frame. If the WTRU transmits an SRS in a sub-frame, the last symbol of the sub-frame will not be used by the WTRU to transmit the PUSCH. In order for the evolved node to perform reliable channel estimation for each uplink frequency schedule, the transmit energy of the SRS (and other channels) is controllable.

In addition, from the perspective of the user equipment, each scheduling component carrier has a transmission block and a hybrid automatic repeat request entity (Hybrid Automatic Repeat Request). Each transmission block corresponds to a single component carrier. The user equipment can schedule the synchronization on multiple component carriers. The design criteria for the control region size of the downlink control signal and the uplink and downlink resource assignments can be as follows: (1) The physical downlink control channel (PDCCH) on the component carrier is used to specify the same component. The physical downlink shared channel (PDSCH) of the carrier and the PUSCH resource on a single connected uplink component carrier, and the PDCCH on the (2) component carrier may be assigned to one of the component carrier PDSCH or PUSCH resources.

In the long term evolution technology, the PDCCH and the PDSCH are multiplexed in the time domain. In general, the PDCCH occupies the first few OFDM symbols, where the number of occupied symbols (CFI value) is determined by the signal on the PCFICH (Physical Control Format Indicator Channel). In an embodiment, the following table provides possible values:

In the long-term evolution advanced technology, carrier aggregation uses cross-carrier scheduling, which has the following features. If the PDCCH is unreliable on its own component carrier due to interference (eg, heterogeneous access network HetNet), the PDSCH may be scheduled by the PDCCH on the other carrier. In this case, the PCFICH may be unreliable, and may also result in an error starting point and a PDSCH decoding problem. It has been suggested that the information may be carried by the RRC signal or the PDCCH signal.

The MBSFN sub-box on this topic will have some problems. Since the maximum number of OFDM symbols in the MBSFN sub-frame is 2, it has been proposed to have additional information in the RRC configuration, so that the user equipment can know which CFI needs to be applied to each sub-frame, and consider the MBMS (Multimedia Broadcast/Group) between the evolved nodes. Broadcast service) sub-frame configuration.

Sending a CFI for each sub-box requires an extra load. Furthermore, when the MBSFN sub-box changes, more frequent resetting is required. In addition, more interaction or coordination between evolved nodes is required to maintain CFI information with each other.

Figure 6 is a flow diagram of a method 600 for determining a CFI value in accordance with an embodiment of the present invention for reducing resource waste due to cross-carrier scheduling and simplifying the mechanism for determining CFI for cross-carrier scheduling. .

The methods and apparatus disclosed herein are used to determine the CFI value in a wireless communication system. In an embodiment, the method includes configuring a carrier to aggregate a complex component carrier to a system device, such as a user equipment or an evolved node. Additionally, the method includes receiving a PDSCH on a first component carrier. The method also includes transmitting a corresponding PDCCH on a second component carrier. In addition, the method also includes configuring an initial value to CFI using an RRC signal. The method further includes setting the CFI such that the CFI is available to determine the starting point of the PDSCH.

In step 602, a complex system device, such as a user equipment and a evolved node, has carrier aggregation of complex component carriers. In step 604, the PDSCH is received on a component carrier. In step 606, a corresponding PDCCH is transmitted on a different component carrier. In step 608, an initial value (such as A) is configured to CFI using the RRC signal. In step 610, the CFI is set such that the CFI is available to determine the starting point of the PDSCH.

In one embodiment, the CFI is set for an MBSFN sub-frame and the CFI is set to a smaller value between the initial value and a selected constant. For example, if the initial value of the CFI is set to A using the RRC signal, and a selected constant value is 2, the CFI will be set to min(A, 2) or the value between A and 2 for MBSFN. Small value. In another embodiment, for a normal sub-frame, the CFI will be set to the initial value. For example, if the initial value of the CFI is set to A using the RRC signal, the CFI will be set to A for the normal sub-frame.

In another embodiment, the MBSFN sub-frame configuration for transmitting one of the second component carriers of the PDSCH determines a plurality of MBSFN sub-frames. In this embodiment, the MBSFN sub-frame configuration is carried on a System Information Block (SIB) for transmitting component carriers of the PDSCH.

The above paragraphs are described in various levels. Obviously, the teachings herein can be implemented in a variety of ways, and any particular architecture or function disclosed in the examples is merely representative. In light of the teachings herein, it will be understood by those skilled in the art that the various aspects disclosed herein can be implemented independently or two or more layers can be combined. By way of example, a certain device or a method may be implemented or implemented in a manner that is in any number of ways as referred to in the foregoing. In addition, implementation of a device or implementation of a method may be added to or different from one or more of the layers discussed above in any other architecture, or functionality, or architecture and functionality. Again, the above points are exemplified. In some cases, parallel channels can be established based on the pulse repetition frequency. In some cases, parallel channels can also be established based on pulse position or offset. In some cases, parallel channels can be established based on timing hopping. In some cases, parallel channels can be established based on pulse repetition frequency, pulse position or offset, and timing hopping.

Those skilled in the art will understand that messages and signals can be presented in a variety of different technologies and techniques. For example, all of the data, instructions, commands, messages, signals, bits, symbols, and chips that may be referenced above may be volts, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, Or presented in any combination of the above.

Those skilled in the art will appreciate that various illustrative logical blocks, modules, processors, devices, circuits, and arithmetic steps are described herein with the various hardware disclosed above (eg, with source code or other Digital implementation of technical design, analogy implementation, or a combination of both), various forms of programming linked to instructions or design codes linked to instructions (referred to as "software" or "software modules" for convenience in the text) "), or a combination of both. To clearly illustrate the interchangeability of the hardware and software, a variety of descriptive elements, blocks, modules, circuits, and steps are generally described above in terms of functionality. This feature, implemented in hardware or software, will depend on the specific application and design constraints imposed on the overall system. The person skilled in the art can implement the described functions in a variety of different ways for each particular application, but the decision of this implementation should not be construed as a departure from the scope disclosed herein.

In addition, a variety of illustrative logical blocks, modules, and circuits, and the various aspects disclosed herein can be implemented in integrated circuits (ICs), access terminals, access points; or by integrated circuits, access Terminal, access point execution. The integrated circuit can be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hard Body elements, electronic components, optical components, mechanical components, or any combination thereof, are designed to perform the functions described herein; and may be performed within integrated circuits, integrated circuits, or both. Execution code or instruction. A general purpose processor may be a microprocessor, but could be any conventional processor, controller, microcontroller, or state machine. The processor may be comprised of a combination of computer devices, such as a combination of a digital signal processor (DSP) and a microcomputer, a plurality of sets of microcomputers, a set of at most groups of microcomputers, and a digital signal processor core, or any other similar configuration.

Any specific sequence or layering of the procedures disclosed herein is by way of example only. Based on design preferences, it must be understood that any specific order or layered steps of the program may be rearranged and still be included within the scope of this document. The accompanying claims are intended to be illustrative of a

The steps of the method or algorithm relating to the types disclosed herein may be directly implemented in a hardware, a software module executed by a processor, or a combination of both. Software modules (including executable instructions and related materials) and other data can be resident in a data memory (such as random access memory, flash memory, read-only memory, erasable programmable read-only memory) Body, electronic erasable programmable read-only memory, scratchpad, hard drive, removable disk, CD-ROM, or any other type of computer readable storage in the known technology medium). A sample storage medium can be coupled to a machine, such as a computer/processor that can read data (eg, code) from a storage medium or write data to a storage medium (referred to herein as "processor" for convenience) . A sample storage medium can also be integrated into the processor. The processor and the storage medium can reside in an application specific integrated circuit (ASIC). This particular application integrated circuit can reside in the user equipment. Alternatively, the processor and the sample storage medium may reside in a discrete component of a user device. Moreover, in some versions, any suitable computer program can include a computer readable medium having one or more codes associated with the types disclosed herein. In some cases, a computer program product may include a layer of packaging material.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

100. . . Access network

104, 106, 108, 110, 112, 114, 224a~224t, 252a~252r, 518, 538. . . antenna

116, 122. . . Access endpoint

118, 124. . . Reverse link

120, 126. . . Forward link

200. . . Multiple input multiple output system

210. . . Transfer system

212, 236. . . Data source

214, 238. . . Transfer data processor

220. . . Transfer multiple input multiple output processor

222a~222t. . . Transmitter/receiver

230, 270. . . processor

232, 272, 310, 514, 524, 534. . . Memory

240. . . Demodulator

242, 260. . . Receiving data processor

250. . . Receiving system

254a~254r. . . Receiver/transmitter

280. . . Modulator

300. . . Communication equipment

302. . . Input device

304. . . Output device

306. . . Control circuit

308. . . CPU

312. . . Code

314, 516 ₁ ~ 516 _M , 536 ₁ 536 _N . . . transceiver

400. . . Application layer

402. . . Layer 3

404. . . Level 2

406. . . Tier 1

500. . . system

510. . . Evolutionary node (eNB)

512, 522, 532. . . CPU

520. . . Mobile Management Entity/Server Gateway (MME/S-GW)

530. . . Wireless transmit/receive unit (WTRU)

600. . . method

602, 604, 606, 608, 610. . . step

Figure 1 shows an embodiment of a multiple access wireless network system;

Figure 2 shows an embodiment of a transport system;

Figure 3 shows an embodiment of a communication device;

Figure 4 shows an embodiment of the code of Figure 3;

Figure 5 shows another embodiment of a wireless network system;

Figure 6 shows an embodiment of a method for determining the CFI value.

600. . . method

602, 604, 606, 608, 610. . . step

Claims (17)

A method for determining an indicator value, which is applicable to a wireless communication system architecture, comprising: configuring a complex system device with carrier aggregation of a complex component carrier, such as a user equipment or an evolved node; receiving a physical downlink sharing on a first component carrier a channel (PDSCH); transmitting a corresponding one of a physical downlink control channel (PDCCH) on a second component carrier; configuring a control format indicator (CFI) having an initial value using a radio resource control (RRC) signal; The CFI is set such that the CFI is used to determine a starting point of the PDSCH; and the CFI is set to a smaller value between the initial value and a selected constant for a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) sub-frame. A method for determining an index value as described in claim 1 of the patent scope, wherein the selected constant is 2. The method for determining the value of the indicator as described in claim 1 of the patent scope further includes: setting the CFI to the initial value for a normal sub-frame. The method for determining an indicator value according to claim 1, wherein the MBSFN sub-frame configuration of the second component carrier for transmitting the PDSCH determines a plurality of MBSFN sub-frames. A method for determining an index value according to claim 4, wherein the MBSFN sub-frame is configured to be used for transmitting the PDSCH One of the two component carriers is on System Information Block 2 (SIB2). A method for determining an indicator value, which is applicable to a wireless communication system architecture, comprising: configuring a complex system device with carrier aggregation of a complex component carrier, such as a user equipment or an evolved node; receiving a PDSCH on a first component carrier; Transmitting a corresponding one of the PDCCHs on a second component carrier; configuring a CFI having an initial value using an RRC signal; and setting the CFI to a smaller value between the initial value and a selected constant for an MBSFN sub-frame. The method for determining an indicator value according to claim 6 of the patent scope further includes: setting the CFI so that the CFI is used to determine a starting point of the PDSCH. A method for determining an index value as described in claim 6 of the patent scope, wherein the selected constant is 2. For example, the method for determining the indicator value described in claim 6 of the patent scope further includes: setting the CFI to the initial value for a normal sub-frame. The method for determining an indicator value according to claim 6, wherein one of the second component carriers for transmitting the PDSCH, the MBSFN sub-frame configuration, determines a plurality of MBSFN sub-frames. A method for determining an index value according to claim 10, wherein the MBSFN sub-frame is mounted on one of the second component carriers SIB2 for transmitting the PDSCH. A device for determining an indicator value, which is applicable to a wireless communication system architecture, comprising: a first module configured to configure carrier aggregation of a complex component device having a complex component carrier, such as a user equipment or an evolution node; a group for receiving a PDSCH on a first component carrier; a third module for transmitting a corresponding one of the PDCCHs on a second component carrier; and a fourth module for configuring using an RRC signal A CFI having an initial value; and a sixth module for setting the CFI to a smaller value between the initial value and a selected constant for an MBSFN sub-frame. The device for determining the indicator value according to claim 12, further comprising: a fifth module, configured to set the CFI so that the CFI is used to determine a starting point of the PDSCH. A device for determining an index value as described in claim 12 or 13, wherein the selected constant is two. The apparatus for determining the index value as described in claim 12 or 13 further sets the CFI to the initial value for a normal sub-frame. The apparatus for determining an indicator value according to claim 12 or 13, wherein one of the second component carriers for transmitting the PDSCH, the MBSFN sub-frame configuration determines a plurality of MBSFN sub-frames. The apparatus for determining an index value according to claim 17, wherein the MBSFN sub-frame is mounted on one of the second component carriers SIB2 for transmitting the PDSCH.